Nigel_
Second Officer
Flight distance : 388642 ft
United Kingdom
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ntxbowhunter13 Posted at 2017-9-8 05:27
Oh wow, much more information than I thought. I suppose that's about where it went down at, I wonder why I haven't been able to find it sunk in the mud near the bottom? it's only around 3-4ft deep right there or even less.
http://www.phantomhelp.com/LogViewer/S7OIP0X4NII8OQHV9F5N/
Looks like you had a compass error immediately on take off, maybe a lump of scrap iron, or maybe a large steel bolt under the ground? After that it gave up on the GPS since it didn't match the compass data.
The GPS position appears to be valid, however the barometer clearly had a problem so I cant tell how high it was when it lost signal. At the end it rolls to try and correct position from the bad compass, that would have caused it to move away from the last position fairly rapidly, since the compass is wrong I don't know what direction it went in and since the altimeter is wrong I don't know how far, but I would expect it to be sitting on the mud at the bottom within about 10 meters of the last location. From the satellite image it doesn't look like there would be enough water current there to move it far.
The battery looks a bit low too, but I don't think that caused the lack of control. I don't often look at P3 logs so I'm not sure.
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